Bumper insert for motorcycles



FIG. 1 is a perspective view of a first embodiment showing my new and ornamental design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is an end view, the opposite end being a mirror-image thereof.

The broken lines shown are for illustrative purpose only and form no part of the claimed design. 

The ornamental design for a bumper insert for motorcycles, as shown and described. 